Exhalation valve flap



The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawings will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a perspective view, showing the new design for an exhalation valve flap viewed from a first angle;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof, the left side view being a mirror image of the right side;

FIG. 4 is a top edge view thereof; and,

FIG. 5 is a bottom edge view thereof. 

CLAIM The ornamental design for an exhalation valve flap, as shown and described. 